Abstract
Abstract A novel Pt/RuO 2 /CNTs anodic catalyst was prepared for direct methanol fuel cells (DMFC). Compared to Pt/CNTs with the same Pt loading, the activity of Pt/RuO 2 /CNTs for electrocatalytic oxidation of methanol is 3 times higher. The electrocatalytic activity of Pt/RuO 2 /CNTs with different RuO 2 contents was investigated by cyclic voltammetry. It was observed that the electrocatalytic performance of Pt/RuO 2 /CNTs was strongly dependent on the RuO 2 content. The Pt/RuO 2 /CNTs catalyst with 15% Pt and 9.5% RuO 2 exhibits the best electrocatalytic methanol oxidation activity. The specific capacitance change of RuO 2 /CNTs, determined by the matching degree of proton conductivity and electron transfer, is the main reason for the change of electrocatalytic methanol oxidation activity of Pt/RuO 2 /CNTs with different RuO 2 contents. The novel electrocatalyst design concept based on capacitance may be very useful in designing electrocatalysts for DMFC.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
